What's he thinking? Please help, I'll answer yours?

i like this guy and we used to play a lot of xbox together and he's always so nice to me. at school he sometimes would look at me and yeah. but today i was joking around with his friend when he was there like i was like oh you wanna fight me? cause his friend pushed me and the guy i like was kind of just standing there shyly, but then when his friend bumped into another girl (i know the guy i like used to like her and they're friends kind of) he's like "fight fight fight!" and then later when his friend bumped into me again and we were saying the same stuff, the guy i like was like just standing there not talking! why was he only talking to the other girl!? what's he thinking?! thanks!